[maplab-users] Re: Map doesn't appear in the map-extent

[Bimal Achary]

Dear Kevin,

             Thanks a ton for the suggestion.In fact the map is now
inside the view extent. I can view it but couldn't able to do any
opeartions.

Like if i'm zooming-in then the map goes out of the extent and
completely disppearing.So is for zoom out and query opeartions.

I can't do any query.

My map shape file Orissa has 30 ploygons as 30districts.This contains
all demographic details of Orissa and opens the database correctly in
ArcView.How can i view the attributes of my shape file as i see in
Arcview.

I hope i'm clear in explaining my query.

Thanks and regards,
Bimal


On 6/9/05, kgrootendorst at baird.com <kgrootendorst at baird.com> wrote:
> Bimal,
> It's critical that you change your extents to match the data you want to 
> show.
> For example, I've built an application that shows all the Great Lakes 
> (Canada-USA) in a 'lat-long' coordinate system.
> In my map file, I've defined the extents as:
> 
> EXTENT -93 38 -74 51  #xmin ymin xmax ymax  NAD 83
> 
> If my shapefile is not in this extent (like a shapefile of India), I will 
> not see it.
> 
> Also, you don't have to define a projection in your map file, as long as 
> all your input datasets have the same spatial reference.
> If you plan to reproject on the fly, then you will have to define this 
> parameter.
> 
> Kevin
> ______________________________
> 
> 
> 
> Bimal Achary <bimal.achary at gmail.com> 
> Sent by: maplab-users-bounces at lists.maptools.org
> 06/08/2005 06:58 AM
> Please respond to
> Bimal Achary <bimal.achary at gmail.com>
> 
> 
> To
> maplab-users at lists.maptools.org
> cc
> 
> Subject
> [maplab-users] Map doesn't appear in the map-extent
> 
> 
> 
> 
> 
> 
> Hi All,
> 
>         I'm a new user of MapLab-2.2.I belongs to India.
> 
> I have created a map file named "test.map". where i want to add india
> as a layer.I'm getting every thing correct(Like legend bar,scale
> bar,tools etc) but not getting any view on the map extent.
> 
> My shape file is not in any projection system .This is simply 
> geo-referenced.
> 
> Also i'm not providing any projection system for this.have i to define 
> it??
> 
> I have taken the Map extents as it was in the tutorial map file .Have
> i to change this as per the geo-graphic location(though i don't think
> so).
> 
> Any-thing wrong am i doing??Kindly tell me the procedure to correct it.
> 
> Thanks to all in advance for the supports.
> 
> Regards,
> Bimal Pr.Achary.
> GIS Software Engineer
> UNDP,Orissa
> India
> 
> _______________________________________________
> Maplab-users mailing list
> Maplab-users at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/maplab-users
> 
> 
>